/*
 * Copyright (c) 2010, VeRSI Consortium
 *   (Victorian eResearch Strategic Initiative, Australia)
 * All rights reserved.
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the VeRSI, the VeRSI Consortium members, nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS AND CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package versi.vitro.oaiserviceprovider.application;

import java.util.Date;

import org.apache.log4j.Logger;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import versi.vitro.oaiserviceprovider.model.ExportableModelGenerator;
import versi.vitro.oaiserviceprovider.service.exporter.api.ExporterService;

/**
 * VITRO OAI-PMH provider.
 */
public class VitroOAIProvider {

    /** log4j instance. */
    public static final Logger LOGGER = Logger.getLogger(VitroOAIProvider.class);

    /** ANDS Jena Manager. */
    private ExportableModelGenerator exportableModelGenerator;

    /** Exporter Service. */
    private ExporterService exporterService;

    /**
     * Sole entry point to the class and application.
     * 
     * @param args
     *            Array of String arguments.
     * @exception java.lang.Exception
     *                Thrown from the main class.
     * 
     * */
    public static void main(String[] args) throws Exception {
	String[] contextFiles = { "oai-app-applicationContext.xml", "oai-applicationContext.xml" };
	ApplicationContext springContext = new ClassPathXmlApplicationContext(contextFiles);
	VitroOAIProvider vitroOAIProvider = (VitroOAIProvider) springContext.getBean("vitroOAIProvider");
	vitroOAIProvider.startApplication();
    }

    /**
     * Default Constructor.
     * 
     * @param exportableModelGenerator
     *            Service to manage the construction of a model that can be
     *            exported and that is suitable for the ANDS harvester.
     * @param exporterService
     *            Exporter service extracts exportable model from the triple
     *            store as RDF/XML, converts to XML and presents it to OAICat.
     * 
     */
    public VitroOAIProvider(ExportableModelGenerator exportableModelGenerator, ExporterService exporterService) {
	super();
	this.exportableModelGenerator = exportableModelGenerator;
	this.exporterService = exporterService;
    }

    /** Start RDF OAI-PMH Extraction Application. */
    protected void startApplication() {
	long startTime = System.currentTimeMillis();
	long duration = 0;
	Date startDateTime = new Date();
	LOGGER.info("Started processing on: " + startDateTime);

	exportableModelGenerator.generateExportModel();

	LOGGER.info("Step 7. Begin: export of the XML file needed by OAICat");
	exporterService.generateXmlFile();
	LOGGER.info("Step 7. End: export of the XML file needed by OAICat");

	duration = System.currentTimeMillis() - startTime;
	Date stopDateTime = new Date();
	LOGGER.info("Processing finished on: " + stopDateTime);
	LOGGER.info("Processing duration: " + duration / (1000 * 60) + " minutes. ");
    }
}
